Split custom_keyword and custom_punctuation modules
diff --git a/src/lib.rs b/src/lib.rs
index e119192..ee867be 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -538,7 +538,8 @@
 #[doc(hidden)]
 pub mod export;
 
-mod custom_token;
+mod custom_keyword;
+mod custom_punctuation;
 
 #[cfg(feature = "parsing")]
 mod lookahead;